US984811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-pump.
Assignee: Pratt and Whitney Co Inc
•
Filing: 1909-10-04
•
Granted: 1911-02-21
•
Expires: 1929-10-04
Abstract
No abstract record available.
Inventors
- 👤 Bengt M W Hanson
- 👤 Carl L Grohmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:31
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/088
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1914-02-20 | 1914-08-22 | 1915-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-02-20 | 1918-08-22 | 1919-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-02-20 | 1922-08-22 | 1923-02-21 | $7700.00 | Window Closed / Lapsed |